絶望少女達

Anime (often called "anisong" for vocal themes) is the umbrella term for songs and scores created for Japanese animation, including opening/ending themes and background music. It blends contemporary J‑pop/J‑rock songwriting with dramatic orchestral scoring and modern electronic production, aiming for instantly memorable hooks and emotionally charged climaxes tailored to a show's narrative and characters. Stylistic hallmarks include high-register, expressive vocals; tight, hook-forward structures (especially 90-second “TV size” versions); bright, polished production; and frequent late-song key changes. Arrangements often hybridize rock bands, strings, brass, and EDM textures to deliver cinematic impact, while lyrics favor aspirational, metaphor-rich imagery that mirrors the series’ themes.

Shonen is a musical style associated with anime and media franchises targeted at the 'shōnen' (young boy) demographic, characterized by high-energy rhythms, heroic themes, and a fusion of rock, pop, and electronic elements. The genre is defined by its 'burning' (netsu) passion, often featuring driving electric guitars, fast tempos, and emotional vocal performances that evoke feelings of courage, friendship, and overcoming adversity. While originally a demographic term, it has evolved into a distinct sonic aesthetic within the 'anison' (anime song) landscape, encompassing both band-based opening themes and character-driven songs from multimedia projects.